The Spy and the Traitor is a non-fiction book by Ben Macintyre about Oleg Gordievsky, a high-ranking KGB officer who secretly worked as a double agent for Britain's MI6 during the Cold War, eventually orchestrating a daring escape from the Soviet Union. The book details his motivations, his vital role in providing intelligence, and the tense Cold War-era gamesmanship between the superpowers, ultimately helping to hasten the Soviet Union's collapse.